[amsat-bb] Re: Polarity questions
rbutler at tsss.org
Fri Sep 19 07:58:04 PDT 2008
Tim Tapio wrote:
> How much signal reduction is there as the result of having the wrong
> circular polarization?
> I'm looking at M2 circular antennas for the 70cm downlink, it's another $200
> for the switching to change polarity (woo hoo).
> 73 de Tim, K4SHF
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The difference between RHCP and LHCP is 20 dB
The difference between Horizontal and Vertical Linear is 20 dB
The difference between (RHCP or LHCP) and (Horizontal or Vertical) is 3 dB
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